公开(公告)号：US20230129867A1

公开(公告)日：2023-04-27

申请号：US17978730

申请日：2022-11-01

Applicant: Cisco Technology, Inc.

Inventor： Raul Alejandro Casas ,  Marcin Ciolek ,  Samer Hijazi ,  Dror Maydan ,  Hua Mu ,  Erik Panu ,  Christopher Rowen

IPC: H04L12/18 ,  G10L25/78 ,  H04M9/02 ,  G06F3/16 ,  H04M3/56

Abstract: Systems and methods are disclosed for audio group identification for conferencing. For example, methods may include joining a conference call using a network interface; accessing an audio signal that has been captured using a microphone; detecting a control signal in the audio signal; and, responsive to detection of the control signal, invoking modification of an audio path of the conference call.

公开(公告)号：US20250131931A1

公开(公告)日：2025-04-24

申请号：US18540060

申请日：2023-12-14

Applicant: Cisco Technology, Inc.

Inventor： Marcin Ciolek ,  Michal Sulewski ,  Raul A. Casas ,  Samer Lutfi Hijazi ,  Mihailo Kolundzija

IPC: G10L19/038

Abstract: A method comprises: vector quantizing input vectors representative of audio into an original sequence including indices of codewords of a codebook; generating candidate sequences including the indices of the codewords of the codebook by evaluating, for each candidate sequence, transition costs for transitions between the indices based on (i) transition probabilities of the transitions, and (ii) distances between the codewords represented by the indices and the input vectors that corresponds to the indices; determining a preferred candidate sequence of the candidate sequences to replace the original sequence based on the transition costs for each candidate sequence; and transmitting the preferred candidate sequence in place of the original sequence.

公开(公告)号：US20250131930A1

公开(公告)日：2025-04-24

申请号：US18540084

申请日：2023-12-14

Applicant: Cisco Technology, Inc.

Inventor： Michal Sulewski ,  Marcin Ciolek ,  Mihailo Kolundzija ,  Raul A. Casas ,  Samer Lutfi Hijazi ,  Christopher Rowen

IPC: G10L19/022 ,  G10L19/00 ,  G10L19/038

Abstract: A method comprises: storing n dimension (nD) dictionaries (nD dictionaries) where n decreases from a highest dimension to a lowest dimension, each nD dictionary including codewords for sequences of n symbols that are of a limited number that is less than all possible sequences of n symbols; storing key blocks for corresponding ones of the nD dictionaries, each key block configured with keys that map sequences of n−1 symbols to dictionaries of a corresponding one of the nD dictionaries that includes the codewords; receiving a sequence of symbols that represent indices of codevectors of a vector quantizer codebook that are representative of audio; determining a codeword using the key blocks and the nD dictionaries; and encoding a current symbol of the sequence of symbols using the codeword.

公开(公告)号：US11916686B2

公开(公告)日：2024-02-27

申请号：US17978730

申请日：2022-11-01

Applicant: Cisco Technology, Inc.

Inventor： Raul Alejandro Casas ,  Marcin Ciolek ,  Samer Hijazi ,  Dror Maydan ,  Hua Mu ,  Erik Panu ,  Christopher Rowen

IPC: H04L12/18 ,  G10L25/78 ,  H04M9/02 ,  G06F3/16 ,  H04M3/56

CPC classification number: H04L12/1813 ,  G06F3/165 ,  G10L25/78 ,  H04M3/568 ,  H04M9/02

Abstract: Systems and methods are disclosed for audio group identification for conferencing. For example, methods may include joining a conference call using a network interface; accessing an audio signal that has been captured using a microphone; detecting a control signal in the audio signal; and, responsive to detection of the control signal, invoking modification of an audio path of the conference call.